Brief Answer:
Boil / Peri-anal abscess or a fistula in ano . . .

Detailed Answer:
Hi.
Thanks for your query.

I will be more happy if you please give me more details.

Your short history is of a pimple near anus hole, not painful but pains only on sitting.

The most probable causes of such pimple can be:
-This can be a boil
-Can be perianal abscess or
-Fistula in ano.

Whatever the cause, I would suggest you the following::
You need a course of an antibiotic and anti-inflammatory medicines. For this it is better to consult a General Surgeon, so that on actual examination he can ascertain the exact cause, give you prescription for medicines, and ask for investigations as may be necessary.
Exact diagnosis can lead to the p[roper treatment , which may be in the form of medicines and / or surgery too.

Please tell me a few things:
Since when have you got this problem ?
How big is the pimple ?
How are the motions / stools ?
Any problem related to the abdomen ?

I hope this answer helps you to get an appropriate diagnosis and curative treatment.

Please give the feedback and ask for more if you need to; I shall be happy to assist you more.

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Brief Answer:
Get a small course of antibiotic and anti-inflammatory medicines .

Detailed Answer:
Thanks for your feedback.
This may just be a boil then.
It is still a better idea to take a small course of a few days of antibiotic and anti-inflammatory medicines under the guidance and prescription of a Doctor so that the problem is made under control fast.

This is necessary as control of infection at the earliest is very important in this particular area. Otherwise spread can cause far bigger problems

You can apply liquid Povidone Iodine (Betadine) so that the area is made sterile.
Rest of the treatment as discussed above .

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